Calculation and Analysis on AC Interference Law of High Voltage AC Cable to Submarine Pipeline and Exploration of Safe Distance

Software CDEGS was used to build an AC interference model for submarine pipeline interfered by high-voltage AC cables and numerical simulations were conducted to study the effects of parallel spacing, parallel length and voltage grade on the interference parameters of pipelines. Based on the calculation results, the safe distances between cables and pipelines under different voltage grade and parallel length conditions were determined, which could provide reference for AC interference evaluation and routing selection of submarine pipeline.